This section also assesses the usage of appropriate words. In the Language section, you will be tested on the capability of creating correct sentence structures, capitalization, homonyms, possessives, punctuation and agreement (subject - verb and pronoun - antecedent). The remaining 25 percent of questions are based on fictional passages. About 75 percent of questions in this part are formed from informational passages which are composed of documents about the workplace and community, nonfiction and general nonfiction. Count the number of blood cells that pass through the heart every hour.In this section, your duty is to answer questions based on a wide range of reading texts. Observe the heartbeat and blood flow in snakes and frogs. The heart of birds beats faster than the heart of frogs. What misconception did scientists harbor before Harvey’s study? He calculated that the amount of blood pumped each hour by far exceeds the total amount of blood in the body and proved that the same blood passes through the heart over and over again. The main argument for his conclusion that the blood circulates stemmed from his measurement of the amount of blood pumped with each heartbeat. By keeping these animals cool, he could slow their hearts down. Since there was no way for him to observe a human heart in slow motion, he studied the hearts of toads and snakes, rather than the rapidly beating hearts of “warm-blooded” mammals and birds. To carefully observe the beating of the heart and the direction of blood flow, Harvey needed to see the works of the blood in slow motion. He recognized that the heart acts as a pump and does not work by using up blood as earlier anatomists thought. In 1628, English physician William Harvey established that the blood circulates throughout the body. Questions 34 and 35 are based on the following passage. The population was initially large, but when a predator was brought by sailors, the number of mongooses decreased. The mongooses died out since they ran out of food. The number of mongooses kept growing until the snake population was almost gone. The population was small before sailors brought more snakes, increasing the food supply for the mongoose. The number of mongooses kept growing until the people started protecting the chickens. The population was small before sailors brought more mongooses, increasing the gene pool. The snakes were almost gone, the mongoose population started decreasing. The few then multiplied, increasing the number of mongooses. The population was zero before sailors brought a few. The few then multiplied, and the number of mongooses on the island is still Which statement best describes the change in the population of mongooses on the island? the chickens didn’t taste as good to the mongooses. There were hardly any snakes left on the island because the relationship between the population of predator and prey. the ability of humans to change an ecosystem. Some remain on the island, but their number is now at equilibrium, kept in check by the availability of food. However, people caught on and protected the chickens from getting eaten. The mongoose, facing a shortage of snakes, started eating chickens that people kept for their eggs and meat. At some point, there were hardly any snakes left on the island, and people started populating it. The mongooses were not native to the island and there was no predator on the island to keep the mongoose population in check. The mongoose population started increasing since there was ample food around. The population of snakes started decreasing since the mongooses were eating them. Sailors who came to the island brought and let loose mongoose, animals that feed on snakes. Questions 22 through 24 are based on the following passage.Īn island in the Adriatic Sea was overpopulated with snakes. The female bird determines the sex of the offspring by supplying it with the W or the Z chromosome. The female bird determines the sex of the offspring by supplying it with the X or the Y chromosome. The male bird determines the sex of the offspring by supplying it with the X or the Y chromosome. The male bird determines the sex of the offspring by supplying it with one of its W chromosomes. The male bird determines the sex of the offspring by supplying it with the W or the Z chromosome. Birds with a W chromosome and a Z chromosome are female. In birds, like in humans, a pair of chromosomes determines the sex. The baby always gets an X chromosome from the mother, so in humans, the father determines the sex of the baby by supplying it with either an X chromosome to make it female, or a Y chromosome to make it male. Females have two X chromosomes, while males have an X and a Y chromosome. In humans, a pair of chromosomes (one from each parent) determines the sex of the baby.
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